Vibration signal analysis has been proved as an effective tool for condition monitoring and fault diagnosis for rotating machines in the manufacturing process. The presence of the rub-impact fault in rotor systems results in vibration signals with fast-oscillating periodic instantaneous frequency (IF). In this paper, a novel method for rotor rub-impact fault diagnosis based on nonlinear squeezing time-frequency (TF) transform (NSquTFT) is proposed. First, a dynamic model of rub-impact rotor system is investigated to quantitatively reveal the periodic oscillation behavior of the IF of vibration signals. Second, the theoretical analysis for the NSquTFT is conducted to prove that the NSquTFT is suitable for signals with fast-varying IF, and the method for rotor rub-impact fault diagnosis based on the NSquTFT is presented. Through a dynamic simulation signal, the effectiveness of the NSquTFT in extracting the fast-oscillating periodic IF is verified. The proposed method is then applied to analyze an experimental vibration signal collected from a test rig and a practical vibration signal collected from a dual-rotor turbofan engine for rotor rub-impact fault diagnosis. Comparisons are conducted throughout to evaluate the effectiveness of the proposed method by using Hilbert–Huang transform, wavelet-based synchrosqueezing transform (SST), and other methods. The application and comparison results show that the fast-oscillating periodic IF of the vibration signals caused by rotor rub-impact faults can be better extracted by the proposed method.
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October 2017
Research-Article
Nonlinear Squeezing Time-Frequency Transform and Application in Rotor Rub-Impact Fault Diagnosis
Shibin Wang,
Shibin Wang
State Key Laboratory for Manufacturing
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Search for other works by this author on:
Laihao Yang,
Laihao Yang
State Key Laboratory for Manufacturing
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Search for other works by this author on:
Xuefeng Chen,
Xuefeng Chen
State Key Laboratory for Manufacturing
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: chenxf@mail.xjtu.edu.cn
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: chenxf@mail.xjtu.edu.cn
Search for other works by this author on:
Chaowei Tong,
Chaowei Tong
State Key Laboratory for Manufacturing
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
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Baoqing Ding,
Baoqing Ding
State Key Laboratory for Manufacturing
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
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Jiawei Xiang
Jiawei Xiang
Zhejiang Provincial Key Laboratory
of Laser Processing Robot,
Key Laboratory of Laser Precision
Processing and Detection,
Wenzhou 325035, Zhejiang, China
of Laser Processing Robot,
Key Laboratory of Laser Precision
Processing and Detection,
Wenzhou 325035, Zhejiang, China
Search for other works by this author on:
Shibin Wang
State Key Laboratory for Manufacturing
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Laihao Yang
State Key Laboratory for Manufacturing
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Xuefeng Chen
State Key Laboratory for Manufacturing
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: chenxf@mail.xjtu.edu.cn
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: chenxf@mail.xjtu.edu.cn
Chaowei Tong
State Key Laboratory for Manufacturing
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Baoqing Ding
State Key Laboratory for Manufacturing
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Jiawei Xiang
Zhejiang Provincial Key Laboratory
of Laser Processing Robot,
Key Laboratory of Laser Precision
Processing and Detection,
Wenzhou 325035, Zhejiang, China
of Laser Processing Robot,
Key Laboratory of Laser Precision
Processing and Detection,
Wenzhou 325035, Zhejiang, China
1Corresponding author.
Manuscript received January 12, 2017; final manuscript received May 7, 2017; published online August 24, 2017. Assoc. Editor: Robert Gao.
J. Manuf. Sci. Eng. Oct 2017, 139(10): 101005 (13 pages)
Published Online: August 24, 2017
Article history
Received:
January 12, 2017
Revised:
May 7, 2017
Citation
Wang, S., Yang, L., Chen, X., Tong, C., Ding, B., and Xiang, J. (August 24, 2017). "Nonlinear Squeezing Time-Frequency Transform and Application in Rotor Rub-Impact Fault Diagnosis." ASME. J. Manuf. Sci. Eng. October 2017; 139(10): 101005. https://doi.org/10.1115/1.4036993
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